DC-link Capacitor필름 형상에 따른 Joule-heat특성 분석

Analysis of Joule-heat Characteristics according to the DC-link Capacitor Film Geometrics

  • 전용원 (공주대학교 기전공학과) ;
  • 김영신 (공주대학교 생산기술연구소) ;
  • 전의식 (공주대학교 기계자동차공학부)
  • Jeon, Yong Won (Department of Mechanics Engineering, Kongju National University) ;
  • Kim, Young Shin (Industrial Technology Research Institute, Kongju National University) ;
  • Jeon, Euy Sik (Department of Mechanical & Automotive Engineering, Kongju National University)
  • 투고 : 2020.03.05
  • 심사 : 2020.03.18
  • 발행 : 2020.03.31


As global warming accelerates, eco-friendly electric cars are being developed to reduce carbon dioxide emissions, and power conversion inverters are used to drive motors. Among inverter components, DC-link capacitor is heated by high current usage, which causes problems such as performance and life-saving of inverter. Although metal cases with good thermal performance have been used to solve this problem, it is difficult to apply them in practice due to insulation problems with other parts. In this paper, the Heat-Generation influence factor of DC-link capacitor is analyzed. Variables on heat-generation are set at 3 levels for film width, inductance, and film thickness. Box-Behnken to 13 tests using the design and minimal deviations, e.g. through the experiment three times by each level. The surface of the film k type by attaching the sensor current is measured temperature. Capacitance was set to a minimum level of 200 ㎌ and had a frequency of 16 kHz with Worst case, ambient temperature of 85℃ and a ripple current of 50 Ams was applied. The temperature at the measurement point was collected in the data logger after sampling at 1 minute intervals for 2 hours after saturation with the ambient temperature. This experiment confirmed that setup factors are correlated with heat-generation.



연구 과제 주관 기관 : 중소벤처기업부


  1. Seoksan Shin, Hyeongjin Ham, Hyeongcheol Lee, "Lifetime prediction of DC-Link film capacitors using stochastic methods", Journal of the Korean Society Automotive Engineers, pp.792-798, 2013.
  2. Jun-su, Kim, Kil-sang Jang, Kyung-seok Cho, "Induction Coolant Heater for EV", Journal of the Korean Society of Automotive Engineers, pp.1516-1521, 2017.
  3. Dongyoon Noh, Seokjeong Yoo, Jaejun Kang, Hyungtae Moon, "A Link Capacitor Design for On-Board Charger Considering Life-time and Heat-disspation in Electric vehicles", Journal of the Korean Society Automotive Engineers , pp.2378-2381, 2012
  4. KyoHyeon Kim, TW Kim, MG Woo, BJ Jeon, HG Choi, "A Numerical Study on the Effect of Battery-pack Shape of Electric Vehicle on the Forced Convection Around Battery Cells" Journal of the Semiconductor and Display Technology, Vol.16, No.1, 2017.
  5. SY. Won, KJ.Lee, HS.Kim, "Analysis of Parameter Characteristic of Parallel Electrodes Conduction-cooled Film Capacitor for HF-LC Resonance", Journal of the Institute of Electronics Engineers, Vol.53, No.6, pp.155-166, 2016.
  6. JH.Kim, KR.Kim, CY.Oh, JP.Lee, TJ.Kim, "Review of Failure Mechanism of Film capacitor for DC-Link Applications in Power Electronic Converters", Journal of the Power Electronics, pp.364-365, 2019. https://doi.org/10.6113/JPE.2018.18.2.364
  7. SJ.Lee, S.Lee, PS.Kim, CH.Yang, HY.Park, NK.Min, "Self-Healing Characteristics of Polypropylene Films Capacitor", Journal of the Electrical Engineering & Technology, pp.2049-2051, 2005. https://doi.org/10.5370/JEET.2014.9.6.2049
  8. C.Yang, D.Park, Y.Jeon, G.Kang, D.Han, "DC Link Capacitor development for HEV Inverter", Journal of the Korean Society Automotive Engineers, pp.2066-2070, 2008.
  9. Hyun-Soo Park, "The study on DC-Link Film Capacitor in 3 Phase Inverter System for the Consideration of Frequency Response", Journal of the Korea Academia-Industrial Cooperation Society, Vol.19, No.4, pp.117-122, 2018.
  10. Janet Ho, "Effects of Dielectric Material Properties on Metalized Film Capacitor Performance", Institute of Electrical and Electronics Engineers, 10.1109/ICD, 7547770, 2016.
  11. Shumei Cui, Lei Hu, Chao Zhang, Shouliang Han, Wei Zhang, "Research on Temperature Characteristic of DC-Link Capacitor Applied in Electric Vehicles", Institute of Electrical and Electronics Engineers, 10.1109/ITEC-AP, 6940992, 2014.
  12. Il-Hyoung Cho, Nae-Hyun Lee, Soon-Woong Chang, "Analysis of Characteristics and Optimization of Photo-degradation Condition of Reactive Orange 16 Using a Box-Behnken Method", Journal of Korean Society of Environmental Engineers, Vol 28, No.9, pp.917-925, 2006